This weekend, we learn about how National Geographic Explorer-in-Residence Mike Fay made peace between rebel leaders and forest elephants in Central African Republic, we carry water on our back for a 1,000-mile trek down Mexico’s Baja California Coast, and we ride Europe’s rails in comfort.

How far would you go to push the bounds of discovery? What would you risk? From the top of Mount Everest to the surface of the Moon, astronaut Buzz Aldrin and mountaineer Conrad Anker have risked their lives to undertake humankind’s most stunning achievements.

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